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Ethyldichloroarsine

Names
Preferred IUPAC name Ethylarsonous dichloride
Other names ED Dichloroethylarsane; DICK
Identifiers
CAS Number	598-14-1
3D model (JSmol)	Interactive image
ChemSpider	11219
ECHA InfoCard	100.009.019
EC Number	209-919-3
PubChem CID	11711
RTECS number	CH3500000
UNII	4Z7627500U
UN number	1892
CompTox Dashboard (EPA)	DTXSID6060505
InChI InChI=1S/C2H5AsCl2/c1-2-3(4)5/h2H2,1H3Key: LQSFEOMOHFPNEB-UHFFFAOYSA-N
SMILES CC(Cl)Cl
Properties
Chemical formula	C2H5AsCl2
Molar mass	174.8893 g/mol
Appearance	Colorless, mobile liquid
Density	1.742 @ 14 °C
Melting point	−65 °C (−85 °F; 208 K)
Boiling point	156 °C (313 °F; 429 K) (decomposes)
Solubility in water	Soluble in alcohol, benzene, ether, and water
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Highly toxic, irritant
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Y verify (what is  ?) Infobox references

Ethyldichloroarsine, sometimes abbreviated as "ED" and "CY" and also known as ethyl Dick, is an organoarsenic compound with the formula CH₃CH₂AsCl₂. This colourless volatile liquid is a highly toxic obsolete vesicant or blister agent that was used during World War I in chemical warfare. The molecule is pyramidal with the Cl-As-Cl and C-As-Cl angles approaching 90° (see image). Ethyldichloroarsine has high chronic toxicity, similar to lewisite.

References

1. Wood JR (May 1944). "Chemical Warfare-A Chemical and Toxicological Review". American Journal of Public Health and the Nation's Health. 34 (5): 455–60. doi:10.2105/AJPH.34.5.455. PMC 1625133. PMID 18015982.
2. "Methyldichloroarsine". NorthShore University HealthSystem. Archived from the original on March 7, 2011.
3. Okumura A, Takada Y, Watanabe S, Hashimoto H, Ezawa N, Seto Y, et al. (July 2016). "In-Line Reactions and Ionizations of Vaporized Diphenylchloroarsine and Diphenylcyanoarsine in Atmospheric Pressure Chemical Ionization Mass Spectrometry". Journal of the American Society for Mass Spectrometry. 27 (7): 1219–26. Bibcode:2016JASMS..27.1219O. doi:10.1007/s13361-016-1394-0. PMID 27098411.

• Arsenical vesicants
• Organoarsenic chlorides